In article ,
Set Square wrote:
The type of stat which you have *needs* 4 wires, and can't safely be
installed with 3. A common short-cut employed by some plumbers is to use
the green/yellow wire for the switched live (which you refer to as the
"call to heat").

The laugh is that if you used it for the neutral there would be less
chance of getting a belt off it.

--
*In some places, C:\ is the root of all directories *

Dave Plowman London SW
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